Manually operated heavy-duty shears



N 1949 A. L. PETERSON 2,487,473

MANUALLY OPERATED HEAVY- DUTPEHEARS Filed Dec. '7, 1946 ,wv'NToR; @y M W Patented Nov; 8, 1949 UNITTZfi STATES PATENT may orsmriip iiiih'vi'z-btiry SHEAKS Arthur L.-:Peterson, Long Beach, Galif.

imiaheetionneeeiiiber 7, 1946, Serial No. 714,888

(01. so zvv telaims.

This invention is a handy, portable, heavy duty, "manual shears fer *the use of ste-i edi'iies and many other industrial 'wsi iiinen it is very desirable to have handy a substantial tool for quickly shipping heavy strap-iron, or bars or rods, or other pieces as may be met with in various jobs; in field or shop.

It is an object of the invention to providea strong and durable hand tool which can be in.- stantly applied to a given piece of work, say a metallic, bundle binder, to quickly and readily cut the element, to facilitate the main job of handling the bundle as by breaking it down into more convenient sizes.

Further, an object of the invention is to pro-- vide a shear which works on the percussive action principle-to get faster operation and eliminate much hard, manual effort; work that cannot be done by conventional scissors-shears, even if available.

Additionally, an object of the invention is to provide a percussive shears which may be manipulated by hand or foot or both by a direct sliding stroke of one element of the tool on another, and which includes a screw-press action means for use instead of the percussive stroke.

The invention resides in certain advancements in this art, that is shear tools for. hand operation, as set forth in the ensuing disclosure and having, with the above, additional objects and advantages as hereinafter developed, and whose construction, combinations, and details of means will be made manifest in the following description of the herewith illustrative embodiment; it being understood that modifications, variations and adaptations may be resorted to within the scope, spirit and principles of the invention as it is claimed in conclusion hereof.

Figure 1 is a partly sectioned, elevation of the tool as in use. Figure 2 is a cross-section taken on a plane just below the handle bar. Figure 3 is an elevation of the lower portion of the tool endwise of the cutting blades on interposed work.

The tool embodies a substantial and preferably non-circular iron post 2 of suitable length and whose upper portion is cylindrical and threaded to receive a nut part 3 which is shown as being formed in the length of a suitable transverse handle-bar 4; though not limited to such a device.

Rigidly fixed on the lower or foot end of the post is a laterally extending, sheer-action blade 5 standing depth-wise ina vertical plane and presenting a sharp top edge 5a. The distal end of this blade is preferably acutely angular between "top and bottom edges so that it be "quickly ne'edled into "a 'g'o'odfcutting position "in many applications to it's work.

boomer-opposed "to "the cutting "blade t is "a complementary shear blade 6 "a sharp bottom cutting edge 60.; the side plane of the blade 6 being vertical for close action past the cooperative face of the bottom or basal cutter blade 5 (constituting a base for the post). The blade 6 is rigidly fixed on the lower or foot end of a momentum or percussive slide in the form of a preferably cylindrical tube 1 which is considerably shorter than and fairly freely reciprocates 0n the central post 2, without relative rotation. The handle-bar 4 may be removably attached to the top of the slide 1' as a means to raise the slide and its blade 6 on the standing post 2 for interposition of the work W to be out between the blades, or the positioning of the tool to the work as the given job may require, and by man power applied to the handle-bar the slide may be swiftly driven down to percussively strike the cutter 6 to the workwhile the basal cutter 5 is lodged on a stable support.

If desired a friction brake spring 8 may be installed in the slide to yieldably hold the upper cutter 6 clear of the cutter 5 for work insertion.

For the application of additional force to the percussive slide it is provided near its bottom end with a strong foot-rest 9 having a hub 97:. rotatively fitting the slide and provided with a substantial set screw Ill whereby to enable the rigid setting of the foot-rest at any convenient position radially of the slide. Hence the full weight of a heavy man can be instantly thrown onto the slide to drive it down on heavy stock to be out.

In some cases the handle 4 can be screwed at its threads 3 onto the post threads and run down to engage the slide 1 and then force the cutter 6 down on interposed work. This screw action may be used when a percussion manipulation is not desired or feasible.

What is claimed is:

l. A percussive-action shears for cutting heavy bundle bails, bars, rods and other pieces, including a post having rigidly fixed as a foot on its lower end a laterallyprojecting cutter element the top edge of which is sharpened, and a tube nonturnably slidable on the post and having a rigid foot-end cutter complementary to the post cutter, and a transverse hand-bar attached to the upper part of the slide to facilitate a percussive stroke of the slide cutter; both of the cutters extending horizontally, bodily out from,

the lower ends of the post and the tube and the post extending entirely through the tube as a stabilizing guide for the tube.

2. The shears of claim 1; and a. foot rest attached to the slide and contiguous to its cutter for application of foot pressure on the slide outter while the shears is manually controlled by way of the hand-bar.

3. A foot action shears including a post having a foot with a cutting edge; the post having a threaded upper end portion, a cutter slide on the post, and a hand-bar having a nut element applicable to, the said threaded portion whereby to force the slide and its cutter down by screw and nut coaction while the slide is under foot pressure on its lower end; the slide having a foot rest.

4. A percussive shears including an elongate post having a rigid, laterally projecting basal cutter element, and a percussive slide nonturnably mounted on the post and having a laterally projecting foot cutter complementary to the basal cutter; the post extending from end to end of the slide for stabilizing it during operation of the shears.

5. A shears of the class set forth and including a post having a threaded upper end and a laterally projecting cutter element, a slide through which the post extends from end to end and has a lateral cutter complementary to said element, and a T-handle threaded on the post for functioning the cutter and said element.

ARTHUR L. PETERSON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 

